diff --git a/tests/Makefile b/tests/Makefile
index 5aa7f4e0d..81b19aae0 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -11,8 +11,8 @@ all: clean
 
 run-basic-tests: all
 	ant test
-	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml > linphone-junit-report.xml
+	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml 2>/dev/null > linphone-junit-report.xml
 
 run-all-tests: all
 	adb shell am instrument -w -e size large org.linphone.test/com.zutubi.android.junitreport.JUnitReportTestRunner
-	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml > linphone-junit-report.xml
+	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml 2>/dev/null > linphone-junit-report.xml